Memory leak when executing Doctrine query in loop

Question

I\'m having trouble in locating the cause for a memory leak in my script. I have a simple repository method which increments a \'count\' column in my entity by X amount:

Answer 1

For me it was clearing doctrine, or as the documentation says, detaching all entities:

$this->em->clear(); //Here em is the entity manager.

So inside my loop y flush every 1000 iterations and detach all entities (I don't need them anymore):

    foreach ($reader->getRecords() as $position => $value) {
        $this->processValue($value, $position);
        if($position % 1000 === 0){
            $this->em->flush();
            $this->em->clear();
        }
        $this->progress->advance();
    }

Hope this helps.

PS: here's the documentation.